Question

Which of the following units can used to describe the rate of a chemical reaction?

○ (mol·L)/min


○ (mol/L)/min


○ 1/(mol·L·min)


○ none of these

Answer 1

The rate of a reaction can be expressed as the molarity (or concentration) of the reaction that reacts per unit of time, which can be any unit of time, but is commonly seconds or minutes. Recall that molarity is moles/ volume, and that volume is often in units of liters and mililiters. Given that reaction rate is M/time, and M is mol/L, the correct answer is (mol/L)/min.

Answer:

(mol/L)/min